You are given an integer array prices where prices[i] is the price of the ith item in a shop.
There is a special discount for items in the shop. If you buy the ith item, then you will receive a discount equivalent to prices[j] where j is the minimum index such that j > i and prices[j] <= prices[i]. Otherwise, you will not receive any discount at all.
Return an integer array answer where answer[i] is the final price you will pay for the ith item of the shop, considering the special discount.
\n
Example 1:
\n\n\nInput: prices = [8,4,6,2,3]\nOutput: [4,2,4,2,3]\nExplanation: \nFor item 0 with price[0]=8 you will receive a discount equivalent to prices[1]=4, therefore, the final price you will pay is 8 - 4 = 4.\nFor item 1 with price[1]=4 you will receive a discount equivalent to prices[3]=2, therefore, the final price you will pay is 4 - 2 = 2.\nFor item 2 with price[2]=6 you will receive a discount equivalent to prices[3]=2, therefore, the final price you will pay is 6 - 2 = 4.\nFor items 3 and 4 you will not receive any discount at all.\n\n\n
Example 2:
\n\n\nInput: prices = [1,2,3,4,5]\nOutput: [1,2,3,4,5]\nExplanation: In this case, for all items, you will not receive any discount at all.\n\n\n
Example 3:
\n\n\nInput: prices = [10,1,1,6]\nOutput: [9,0,1,6]\n\n\n
\n
Constraints:
\n\n1 <= prices.length <= 5001 <= prices[i] <= 1000给你一个数组 prices ，其中 prices[i] 是商店里第 i 件商品的价格。
商店里正在进行促销活动，如果你要买第 i 件商品，那么你可以得到与 prices[j] 相等的折扣，其中 j 是满足 j > i 且 prices[j] <= prices[i] 的 最小下标 ，如果没有满足条件的 j ，你将没有任何折扣。
请你返回一个数组，数组中第 i 个元素是折扣后你购买商品 i 最终需要支付的价格。
\n\n
示例 1：
\n\n输入：prices = [8,4,6,2,3]\n输出：[4,2,4,2,3]\n解释：\n商品 0 的价格为 price[0]=8 ，你将得到 prices[1]=4 的折扣，所以最终价格为 8 - 4 = 4 。\n商品 1 的价格为 price[1]=4 ，你将得到 prices[3]=2 的折扣，所以最终价格为 4 - 2 = 2 。\n商品 2 的价格为 price[2]=6 ，你将得到 prices[3]=2 的折扣，所以最终价格为 6 - 2 = 4 。\n商品 3 和 4 都没有折扣。\n\n\n
示例 2：
\n\n输入：prices = [1,2,3,4,5]\n输出：[1,2,3,4,5]\n解释：在这个例子中，所有商品都没有折扣。\n\n\n
示例 3：
\n\n输入：prices = [10,1,1,6]\n输出：[9,0,1,6]\n\n\n
\n\n
提示：
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